I  have the  issue. Here is a possible solution -

I've solved the problem by deleting the plugins 'loop' within the cm of coredns & nodelocaldns. I could not resolve dns from inside my pod. Whenever I the nodelocaldns start running, the dns problem solved. I applied following solution  but I don't know if this cloud case other porblems. I did not face any problem till now. Solution -

1、kubectl edit cm coredns -n kube-system

2、delete ‘loop’ ,save and exit

3、restart nodelocaldns pods